From peformance cars there are only a few tyres that would qualify against the criteria you set (namely great dry and wet performance). These would include (in order of preference);
- Michelin Pilot Sport 2 (most expensive, uses a twin compound tread with sticky rubber on the outer third of the tread face, and softer treaded rubber on the inner portion for the wet. This is a tyre that maintains its performance right down to a very low tread depth).
- Goodyear Eagle GSD-3 F1 (excellent tyre, much cheaper than the Michelin and achieves similar ratings in reviews, not quite as good in the dry but slightly better in the wet, particularly in acquaplane resistance)
- Pirelli Nero (long been a favoured after-market tyre, good performance on track and excellent wet weather performance, very progressive in giving up grip and confidence inspiring. Slightly more expensive than the Eagle F1s).
Overally I still prefer the Michelin PS2, they are fitted as standard to Porsche's GT3 and BMW's new M3, but the Pirelli and Goodyear get close to its performance for less money.
